Quoting Jochen Roderburg <roderb...@uni-koeln.de>:
Zitat von Jan Schneider <j...@horde.org>:
I delete the mail now in the Old IMP (IMAP delete) and it is shown
there as deleted. In Thunderbird it is also immediately shown as
deleted. In the New IMP
it is *not* shown as deleted, and I do not find a way to persuade
it to display this correctly. No webmail refreshes help, no
Browser refreshes. I can logout and re-login. I can login on
different systems with different browsers, everywhere it is
displayed as not deleted. It even survives a complete server
restart.
This is expected behavior. Due to limitations in the PHP imap
extension, IMAP flag changes outside of IMP can't be detected when
using either "msgcache" or "mlistcache" in the IMP configuration. I
can't remember which one.
Thanks for this important information. So this means that these
optimizations can also only be used when you don't use other mail
programs besides IMP. That is of course not an option here, we can't
force our 40000 university users to use only Webmail. What a pity,
the mailbox cache really made the mailbox displays noticeably faster.
If it is really only one of the two options which causes the
problem, I would guess it *is* mlistcache. I'll try both of them
separately and see what happens.
Is this a thing which will be different in your upcoming own IMAP
PHP library, which was mentioned occasionally here?
FYI, this is *not* an issue with Horde/IMP. Instead, it is a
limitation of the original definition of IMAP 4rev1 (RFC 3501).
Disconnected IMAP clients (such as a webmail client) have no way of
obtaining flag/keyword changes in a mailbox without rescan the mailbox
on every page access. Connected clients (i.e. Thunderbird, Outlook,
etc.) maintain connections to the IMAP server the entire time, so they
are immediately notified if something in a mailbox has changed.
This limitation is precisely what the CONDSTORE IMAP extension (RFC
4551) addresses (and, to a lesser extent, QRESYNC (RFC 5162)). IMP 5
was the first open source webmail client to add support for these
extensions in IMP 5.
michael
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Michael Slusarz [slus...@horde.org]
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